{
    "tender_id": 6194826,
    "check": {
        "ok": true,
        "versions": 2,
        "broken_at": null
    },
    "formula": "content_hash = sha256(content); hash = sha256(prev_hash + \"\\n\" + tender_id + \"\\n\" + version + \"\\n\" + recorded_at + \"\\n\" + content_hash [+ \"\\n\" + actor, when the version has one])",
    "versions": [
        {
            "version": 1,
            "recorded_at": "2026-11-09T21:00:23Z",
            "content": "{\"cpv\": \"30125110\", \"url\": \"https://zwiklodz.logintrade.net/portal,szczegolyZapytaniaOfertowe,4af66d00677445a6f65c159e2cb3f5b3.html\", \"buyer\": \"Zakład Wodociągów i Kanalizacji sp. z o. o.\", \"title\": \"Oryginalne materiały eksploatacyjne do druku.\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"łódzkie\", \"source_id\": \"zwiklodz-4af66d00677445a6f65c159e2cb3f5b3\", \"deadline_at\": \"2026-11-13T11:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-09T10:42:00Z\"}",
            "content_hash": "26c9fc4a4814b0c5a0db3960be0d1a863caffff86a0719ce47f023e21ca065c6",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "f76800d530624ba3c688f17bf1af17c52bb7f29b215813febe6c2f87c13e9b33",
            "actor": null,
            "seal": {
                "id": 17,
                "digest": "ff8cb03aa08e7c772155df1b20fd8d51c1cab7cd026d5e31aa3d74d6ab70c7b2",
                "file": "https://tenderiq.pl/rejestr/pieczec-17.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-17.txt.ots",
                "bitcoin_block": 975226
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-10T01:12:48Z",
            "content": "{\"cpv\": \"30125110\", \"url\": \"https://zwiklodz.logintrade.net/portal,szczegolyZapytaniaOfertowe,4af66d00677445a6f65c159e2cb3f5b3.html\", \"buyer\": \"Zakład Wodociągów i Kanalizacji sp. z o. o\", \"title\": \"Oryginalne materiały eksploatacyjne do druku\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"zwiklodz-4af66d00677445a6f65c159e2cb3f5b3\", \"deadline_at\": \"2026-11-13T11:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-09T13:49:00Z\"}",
            "content_hash": "09890867c21ba907acb63cf8f8858ac0773194c385dc55986c24ce3e2caa2d49",
            "prev_hash": "f76800d530624ba3c688f17bf1af17c52bb7f29b215813febe6c2f87c13e9b33",
            "hash": "65c045454afbebcb3ceabb27c4149448c7c5b861491fdfc837c9ceede316c490",
            "actor": null,
            "seal": null
        }
    ]
}